Chelsea Clinton through the years

Bill and Hillary Clinton are seen with their baby daughter, Chelsea, in 1980. Newscom/FILE

A young Chelsea Clinton is seen with her mother, Hillary, at the Governor's Mansion in Little Rock, Ark., in 1983. Newscom/FILE

Chelsea Clinton is seen here with her parents in 1985. Newscom/FILE

In New York City in July 1992, Chelsea Clinton is at Madison Square Garden during the Democratic National Convention where her father, Bill Clinton, accepts the Democratic nomination for president. Les Stone/Zuma Press/Newscom/FILE

The Clinton family is seen on the grounds of the Governor's Mansion in Little Rock, Ark., in 1992. Ira Wyman/Newscom/FILE

Chelsea Clinton rides a horse in Jackson Hole, Wyo., in August 1996. Newscom/FILE

Chelsea Clinton sits with Marc Mezvinsky in Hilton Head, S.C., in December 1996. Clinton married Mezvinsky in Rhinebeck, N.Y., on July 31, 2010. Mary Ann Chastain/AP/FILE

Chelsea Clinton graduates from high school in June 1997. Sharon Farmer/The White House/UPI/Newscom/FILE

Chelsea Clinton jogs with her father, Bill, along West Tisbury Road in Edgartown on Martha's Vineyard, Mass., in August 1998. Newscom/FILE

Chelsea Clinton dances in the annual spring performance of the young dancers of the Washington Ballet in May 1998 at Lisner Auditorium in Washington, D.C. Newscom/FILE

The Clinton family is seen on the Great Wall of China in June 1998. Gary Hershorn/Reuters/FILE

Chelsea Clinton walks down the steps of the palace of Maharajah of Jodhpur in India on March 20. Clinton was in Jodhpur to watch the festivities of Holi. Amit Bhargava/AP

Chelsea Clinton shakes hands while visiting the village of Ushafa in Nigeria in August 2000. Larry Downing/Reuters/FILE

In Cartagena, Colombia, in August 2000, Chelsea Clinton listens to then-Secretary of State Madeleine Albright as she observes the grounds of the Casa de Huespedes. Albright and Clinton traveled with former President Bill Clinton to Colombia to announce a $1.3 billion US antidrug aid package. Pablo Martinez Monsivais/AP/FILE

Chelsea Clinton is seen in Sydney, Australia, in September 2000 leaving the US versus Lithuania basketball game. Michael Rondou/Newscom/FILE

Chelsea Clinton is seen with her mother as they posed with Olympians and Paralympians in November 2000 at the White House. Andy Nelson/The Christian Science Monitor/FILE

Chelsea Clinton smiles as she participates in a ceremony for the unveiling of the Clinton presidential portraits in June 2004 at the East Room of the White House. Ron Edmonds/AP/FILE

Former US President Bill Clinton and daughter Chelsea share a moment during the dedication ceremony for the William J. Clinton Presidential Center in Little Rock, Ark., in November 2004. Jeff Mitchell/Reuters

Chelsea Clinton walks through New York City on New Year's Eve in 2004. Adam Nemser/Newscom/FILE

Chelsea Clinton (r.) stands with honoree Mosa Shaminma Akter of Bangladesh as they pose for photographers at the United Nations for a gala awards dinner to honor the unsung heroes of poverty eradication in New York in November 2005. Alex Oliveira/Reuters

Chelsea Clinton makes a face while waiting for the start of the Des Moines Register Democratic presidential debate in Johnston, Iowa, in December 2007. Charlie Neibergall/AP

Chelsea Clinton and her father applaud then-Democratic presidential candidate Sen. Hillary Clinton at her New Hampshire primary night rally in Manchester in January 2008. Carlos Barria/Reuters/FILE

Former President Bill Clinton hugs his daughter, Chelsea, at Magness Arena in Denver, Colo., during a campaign stop for then-presidential candidate Sen. Hillary Clinton in late January 2008. John Leyba/The Denver Post/AP

Chelsea and Hillary Clinton share a laugh during a benefit featuring a performance by Elton John at Radio City Music Hall in New York in April 2008. Reuters/FILE

Chelsea Clinton volunteers with Rebuilding Together Delaware County on the organization's 20th annual National Rebuilding Day in April 2008. PRNewsFoto/FILE

Chelsea Clinton volunteers with Rebuilding Together Delaware County on the organization's 20th annual National Rebuilding Day in April 2008. PRNewsFoto/FILE

Chelsea Clinton joins her father, Bill, as they watch as Sen. Hillary Clinton is sworn in as US secretary of State by Vice President Joe Biden at the State Department in Washington in February 2009. Jonathan Ernst/Reuters/FILE

Chelsea Clinton attends the 3rd Annual DKMS Gala benefit at Cipriani's 42nd Street in New York City in May 2009. Evan Agostini/AP/FILE

US Secretary of State Hillary Clinton is given a portrait of herself and her daughter, Chelsea, by Vietnamese Foreign Minister Pham Gia Khiem (l.) while Clinton was attending meetings at the Government Guest House in Hanoi, Vietnam, on July 22. Paul J. Richards/AP

Chelsea Clinton is seen with fiance Marc Mezvinsky on July 12 during the 75th Anniversary held at the The Metropolitan Museum of Art in New York City. Clinton married Mezvinsky on July 31 in Rhinebeck, N.Y. Patrick McMullan/Sipa Press/Newscom